fix(setup): Escape skips instead of exiting, add control hints to all prompts

Previously pressing Escape in any setup wizard menu called sys.exit(1),
killing the entire wizard with no way to recover. Now:

- prompt_choice: Escape keeps the current default and moves on (prints
  'Skipped (keeping current)'). Shows '↑/↓ Navigate  Enter Select
  Esc Skip  Ctrl+C Exit' hint.
- prompt_checklist: Escape returns pre-selected items instead of empty
  list. Shows 'SPACE Toggle  ENTER Confirm  ESC Skip  Ctrl+C Exit'.
- prompt_yes_no: now catches KeyboardInterrupt/EOFError properly.
- Fallback number prompts also show control hints.

Ctrl+C still exits the wizard cleanly.

hermes_cli/setup.py

@@ -72,7 +72,11 @@ def prompt(question: str, default: str = None, password: bool = False) -> str:
         sys.exit(1)
 
 def prompt_choice(question: str, choices: list, default: int = 0) -> int:
-    """Prompt for a choice from a list with arrow key navigation."""
+    """Prompt for a choice from a list with arrow key navigation.
+    
+    Escape keeps the current default (skips the question).
+    Ctrl+C exits the wizard.
+    """
     print(color(question, Colors.YELLOW))
     
     # Try to use interactive menu if available
@@ -88,6 +92,8 @@ def prompt_choice(question: str, choices: list, default: int = 0) -> int:
         )
         menu_choices = [f"  {_emoji_re.sub('', choice).strip()}" for choice in choices]
         
+        print_info("  ↑/↓ Navigate  Enter Select  Esc Skip  Ctrl+C Exit")
+        
         terminal_menu = TerminalMenu(
             menu_choices,
             cursor_index=default,
@@ -99,9 +105,10 @@ def prompt_choice(question: str, choices: list, default: int = 0) -> int:
         )
         
         idx = terminal_menu.show()
-        if idx is None:  # User pressed Escape or Ctrl+C
+        if idx is None:  # User pressed Escape — keep current value
+            print_info(f"  Skipped (keeping current)")
             print()
-            sys.exit(1)
+            return default
         print()  # Add newline after selection
         return idx
         
@@ -118,6 +125,8 @@ def prompt_choice(question: str, choices: list, default: int = 0) -> int:
         else:
             print(f"  {marker} {choice}")
 
+    print_info(f"  Enter for default ({default + 1})  Ctrl+C to exit")
+
     while True:
         try:
             value = input(color(f"  Select [1-{len(choices)}] ({default + 1}): ", Colors.DIM))
@@ -134,11 +143,15 @@ def prompt_choice(question: str, choices: list, default: int = 0) -> int:
             sys.exit(1)
 
 def prompt_yes_no(question: str, default: bool = True) -> bool:
-    """Prompt for yes/no."""
+    """Prompt for yes/no. Ctrl+C exits, empty input returns default."""
     default_str = "Y/n" if default else "y/N"
     
     while True:
-        value = input(color(f"{question} [{default_str}]: ", Colors.YELLOW)).strip().lower()
+        try:
+            value = input(color(f"{question} [{default_str}]: ", Colors.YELLOW)).strip().lower()
+        except (KeyboardInterrupt, EOFError):
+            print()
+            sys.exit(1)
         
         if not value:
             return default
@@ -168,7 +181,7 @@ def prompt_checklist(title: str, items: list, pre_selected: list = None) -> list
         pre_selected = []
     
     print(color(title, Colors.YELLOW))
-    print_info("SPACE to toggle, ENTER to confirm.")
+    print_info("  SPACE Toggle  ENTER Confirm  ESC Skip  Ctrl+C Exit")
     print()
     
     try:
@@ -204,7 +217,8 @@ def prompt_checklist(title: str, items: list, pre_selected: list = None) -> list
         terminal_menu.show()
         
         if terminal_menu.chosen_menu_entries is None:
-            return []
+            print_info("  Skipped (keeping current)")
+            return list(pre_selected)
         
         selected = list(terminal_menu.chosen_menu_indices or [])
         return selected